Eh, there are some straight-haters, if there wasn't there wouldn't be a Het is Ew trope. I guess it's just that if you're homosexual and a bigot, it's easier to hit other people's tolerance limit than if you're a straight bigot.
It's more that there really isn't a known equivalent to the Westboro Baptist Church in the gay community. There are straight-haters but they are
nowhere near their level, or indeed the level of those who carry out hate crimes on LGBT people.
Also, since most churches don't accept anyone overtly gay and there are people who wouldn't vote for a gay politician, they have less opportunity to be vocal about their bigotry.
Most churches I know do, you'd just turn a few heads. There'd be people who weren't happy about it, that's for certain, but they'd be skeletonised like a water buffalo in a river full of piranhas if the media caught wind of it. Rightly so.
It's kinda like the situation with racism: there are both white supremacists and black supremacists, but the former have more recognition.
Because there tend to be more white supremacists than there are black supremacists. They are also more influential in general and hold a bigger public profile.
This is quite a diversion. I suddenly understand where some feminists are coming from where discussions about sexism suddenly become inundated with men saying "but it happens to us too!" I know sexism happens to us, female on male sexism does exist and I have seen it happen. It is an ugly thing and should not be a part of our society and any women participating in it should be ashamed of themselves.
That doesn't change however that women experience the most sexism in their daily lives because, unfortunately, male on female sexism is far more prevalent and in some respects worse. It doesn't mean we should ignore female on male sexism but for god's sake let conversations discussing the male on female stuff at least take place without all the "me, me, me!". It's frustrating that our problem gets ignored but just make a point of bringing it up yourself, don't hijack someone else's conversation.